Sal is excited to start first grade, but she's less than thrilled when she learns Griff, her best friend, is in the other first-grade classroom and has the most popular teacher. Then, a series of mishaps leads Sal to think everything about school is a diaster. With the help of her family, friends, and teacher, Sal learns how to adjust to all the new changes and finds a way to get back to feeling like her old self.